Querrey Previews Federer Vs. Zverev Clash Nov 14, 2017 Singles alternate Sam Querrey gives his thoughts on the Group Boris Becker clash between Roger Federer and Sascha Zverev on Tuesday night at the Nitto ATP Finals. Tags: 2017 Nitto ATP Finals Sam Querrey Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus